Today we found what I think is a baby robin who had fallen onto concrete out of its nest. It seems to have an injury on its jaw (small one on head too maybe?), but it has stopped bleeding. It can still open its mouth. We could see the mother, but didn't think it could help the baby, so we brought it back to the house. It is in a small box right now in a nest of toilet paper. It is very young and has only just started to grow feathers it seems. I tried to give it a small worm (?) but it wouldn't eat it.
Does anyone know how we should care for it? Any advice is greatly appreciated.
Thanks.